Rotary valve for gas-engines.



'No.727,917. PATENTBD MAY 12,1903.- S.H.IDYER. f

ROTARY VALVE FOR GAS ENGINES. APPLIUATION FILED OOT.5, 1900.

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' UNITED STATES Patented May 12, 1903.

PATENT Grrrcrz.

SILAS H. DYER, OFPAWTUOKET, RHODE ISLAND, ASSIGNOR OF ONE-HALF TO EDMUND W. ORSWELL, OF PAWTUCKET', RHODE ISLAND.

ROTARY VALVE FOR GAS-ENGINES.

SPEOIFICATIONforming part of Letters Patent N 0. 727,917, dated May 12, 1903.

7 Application filed October 5, 1900. Serial No. 32,065. (No model.)

To all whom it may concern:

Be it known that I, SILAS H.'DYER, a citizen of the United States, residing at Pawtuoket, in the county of Providence and State of Rhode Island, have invented a new and useful Improvement in Rotary Valves for Gas- Engines, of which the following is a specification.

This invention has reference to an improvement in valves for gas-engines whereby at predetermined intervals the supply of the explosive mixture and the exhaust are controlled; and it consists in the peculiar and novel construction andthe combination of the parts whereby the valve is protected against the blow exerted by the explosion, as will be more fully set forth hereinafter.

Figure 1 is a side view of the end of the cylinder and the valve-chamber. Fig. 2 is a vertical sectional view through the center of Fig. 1. Fig. 3 is a vertical sectional view, taken at right angle to Fig. 2, on the line X X of Fig. 1. Fig. 4 is a horizontal sectional view on the line Y Y of Fig. *1.

Similar letters of reference indicate corresponding parts in all the figures.

In the drawings, a indicates the cylinder, and a the piston, of the engine; I), a cylindrical valve-chamber supported on a circular flange b, by which it is secured to the end of the cylinder. The central opening 6 connects the interior of the valve-chamber with the interior of the cylinder. The valve-chamber b has at one sidethe removable cover 12 The inlet and exhaust ducts are formed in the transverse enlargement b of the cover b In the cover 12 the post if is adj ustably secured by means of a set-screw, and on the inner end of the post the disk I) is secured.

The valve o is rotatably supported on the post 12 and is in frictional contact at one end with the inner surface of the cover and at the other end with the disk I). The valve is provided with a duct the inlet 0 of which registors in the rotation of the valve with the ports of the inlet and outlet ducts, terminating in the inner surface of the cover. The outlet 0 of the duct is in the peripheral surface of the valve and communicates with the annular space a between the valve 0 and the inner surface of the valve-chamber b. The valve 0 is rotated by the shaft d, journaled in the valve-chamber. The arm (1 is secured to the shaft d and carries the pins d d which engage with the lugs on thervalve c. 5

When in use, the parts exposed to the heat of the successive explosions become heated and expand. By the use of the adjustable post b the disk I) may be adjusted to the valveand secure the close contact of the ends 6c of the valve 0 with the disk I) and with the inner surface of the cover 11 in the working condition Without binding. When theinletduct 19 is connected with the pipe supplying the explosive mixture and the opening 0 of 6 the duct in the valve registers with the port of the duct the explosive mixture may pass into the valve-chamberand into the cylinder, and after the explosion when the ductin the valve registers with the outlet-duct 5 as is shown in Fig. 4, the products of combustion may be discharged through the outlet-duct. The force of the explosion is exerted only on the peripheral surface of the valve and not on the ends, the pounding of the valve is avoided, and the wear reduced, thereby preventing leaking and repairs. Having thus described my invention, 1 claim as new and desire to secure by Letters Patent 1. In a gas-engine, the combination with the cylinder, a cylind rical valve-chamber having a tangential flange and an opening. through the same connecting the. interiors of the valve-chamber and the cylinder, and in- 85 let and outlet ducts in the valve-chamber, of a cylindrical valve-bodyof less diameter than the interior of the valve-chamber, a post pro- 'jecting centrally into the valve-chamber and forming the journal-support of the valve, a go disk or head covering the outer face of the valve and secured to the journal-support of the valve, a duct extending from one end of said valve through the body thereof to the peripheral surface of the valvebody, and 9; means for rotating the valve, as described.

2. In combination with theend of the cylinder a, the valve-chamber b, and the inlet and outlet ducts of a gas-engine, of the valvebody 0, the duct in the valve-body having the mo inlet 0 in the end and the outlet 0 in the peripheral surface of the valve, the adjustable valve registering with the inlet and outlet ducts, the shaft d, the arm (1, and the pins d d connecting with and rotating the valve- 15 body, as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

S. H. DYER Witnesses:

J. A. MILLER, J12, ADA E. HAGERTY. 

